About: book swap

Premodifier: book
Head noun: swap

Same concepts
http://dbpedia.org/resource/Book_swapping

Broader concepts

label	provenance	confidence
event	isap:92571080	0.606126
great idea	isap:170299344	0.516848
project	isap:6773915	0.491611

Narrower concepts

label	provenance	confidence